Narcissists love keeping victims to themselves, & will go to any means necessary to accomplish it. Isolating a victim gives an abuser plenty of advantages…
The victim with no support system without caring friends & family, which often makes a victim easier to control. Supportive friends & family give a person strength & help to raise their self-esteem, which are two qualities no abuser wants in a victim.
If a victim doesn’t even realize the situation he or she is in is abusive, caring people in his or her life will recognize it. They will call the victim’s attention to it & convince the victim that he or she deserves better. They also will do their level best to help the victim to escape. Certainly no narcissist wants this scenario!
Lacking that support system also can lead to depression. Depressed people are much easier to control than happy people. They simply don’t care as much about anything, including themselves, so they may go along with all kinds of things. They also won’t talk back or question an abuser like a healthy person would. They don’t think they deserve any better, so they are easy to manipulate which works out very well for abusers.
Also with isolation, this severely limits the information available to a victim. This means a victim is less likely to realize how wrong the abuse is & more likely to tolerate the abuse without question. Isolation also means an abuser can control what information the victim is privy to, which is extremely advantageous to abusers.
Isolation can be accomplished by several different means, & abusers will use any or all of these tactics to get their way.
If a victim already has friends &/or relatives they are close to when the abusive relationship begins, most abusers will sow seeds of doubt in their victims’ minds about those relationships. My ex husband did this. We met just before I turned 17, & even then, he was starting to work on isolating me. It got worse after we were married, though. He began telling me that my best friend wasn’t really a good friend. At the time, her now ex husband was doing the same thing regarding me. As a result, our friendship ended. (Thankfully we got back in touch after our divorces & are now inseparable.) My ex also told me that my grandparents, who I adored, hated me & didn’t believe me that my mother was abusive, so I shouldn’t talk to them anymore. He did it enough that I did sever ties with them for years.
If an abuser isn’t successful at making a victim doubt a person, they have other ways to destroy the relationship. If their victim is with someone, they can call constantly, interrupting that time together & generally being highly annoying. Before getting together with someone, the abuser can create some crisis, forcing the victim to cancel their plans. Bonus for them is if they can make the victim not tell the person they had plans with, to just stand them up, because certainly that person will be angry. Abusers also may keep victims so busy, they simply have no time to spend with anyone but the abuser.
Another way to isolate victims is for an abuser to show their disgust with the victim’s friends or family. Constantly talking about how bad the people the victim cares about are can erode the love the victim feels for them. The victim may begin to see these people as the narcissist does, & the victim ends those relationships voluntarily.
If the victim grows up with an abusive parent, that abuser has a big advantage that a romantic partner lacks. The abusive parent can control the child from birth, & refuse to allow that child to befriend anyone of whom the parent doesn’t approve. The parent can keep the child so close that the child has no opportunity to make friends. A parent can even home school the child or refuse to allow the child to spend time with extended family, & the child must do as he or she is told.
If you’re involved with someone, anyone, who undermines your relationships or tries to separate you from others, it’s a HUGE red flag! If at all possible, don’t let this person isolate you! Maintain your healthy relationships! They are truly invaluable!